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A266733 as a simple table

na(n)
00
121
2168
3756
42520
56930
616632
736036
872072
9135135
10240240
11408408
12668304
131058148
141627920
152441880
163581424
175148297
187268184
1910094700
2013813800
2118648630
2224864840
2332776380
2442751800
2555221075
2670682976
2789713008
28112971936
29141214920
30175301280

[0,21,168,756,2520,6930,16632,36036,72072,135135,
 240240,408408,668304,1058148,1627920,2441880,
 3581424,5148297,7268184,10094700,13813800,
 18648630,24864840,32776380,42751800,55221075,
 70682976,89713008,112971936,141214920,175301280]